Sticky fly-paper



(N'o Mbdel'.)

0. & W. THUM.

STICKY FLY PAPER.

'No. 4173100. Patented Dec. 17, 1889'.

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UNITED STATES IATENT rFicE.

STICKY FLY-PAPER.

SPECIFICATION forming part of Letters Patent No. 417,400, dated December 1'7, 1889.

Application filed September 16, 1889. Serial No. 324,083. (No specimens-l To all whom it may concern:

Be it known that we, OTTO THUM and WIL- LIAM THUM, of Grand Rapids, in the county of Kent and State of Michigan, haveinvented a new and useful Improvement in Sticky Fly- Paper; and we do hereby declare that the following is a full, clear, and exact description of the same.

The object of our invention is to provide, as a new article of manufacture, one or more sheets of sticky fiy-paper, having its central portion covered with sticky material and its margins uncovered, with means for preventing a flow of the sticky material to the edges of the sheets, whether by reason of the warmth of the weather or by the position of the paper during transportation or storage.

A further object is to provide a series of sheets of sticky fly-paper in tablet form, with means for holding the sheets together on their edges, and at the same timepreventing the flow of the sticky material, as described,

' the unsmeared margins of the sheets being turned inwardly while the sheets are in tablet form, and adapted to be turned outwardly to allow for the handling of the sheets as the said sheets are detached.

The invention consists, broadly, of a pair of sheets or leaves of sticky fly-paper hav ing a central portion covered with the sticky substance and an unsmeared margin, the margins being folded back and the edges of the sheets united by an adhering substance adapted to permit of separation of the sheets, but to form a seal for the sticky substance and prevent its flow beyond the folded edge.

The invention further consists in forming a tablet consisting of a series of sheets of sticky fly-paper having their unsm eared margins folded back and the edges of the series of sheets united in tablet form, so as to prevent the fiow of the material, but to permit of the separation of the sheets.

In the accompanying drawings, Figure 1 is a perspective View of a pair of sheets of sticky fly-paper having unsmeared margins folded inwardly upon the uncoated faces of the sheets, thesaid sheets being placed face to face with their sticky faces in contact and edge to edge, the corner of one sheet being tnrned up to show the covered surface. Fig.

2 is a sectional view of the same. Fig. 3 shows our invention as applied to'a single sheet folded upon itself to form two leaves. Fig. 4 represents an exaggerated view of a tablet composed of a series of pairs of sheets represented in Fig. 1, and Fig. 5 represents a similar tablet of the sheets shown in Fig. 3.

In the drawings, A represents a sheet of paper having its central portion upon one side coated with sticky material, leaving an unsmeared margin 1). These margins are folded back upon the uncoated face of the sheet, so as to be kept clean during the pack- .ing and transportation, in order that when the sheets are to be used these margins may be straightened out in line with the sticky surface, and be used in handling and placing the coated sheets. As shown in Fig. 1, two of these sheets with their margins folded in opposite directions are placed with their sticky faces in contact with coincident edges, the sheets being accurately folded and of the same dimensions, so that the edges of the sheets are even all around.

In order to prevent the sticky material from exuding, and at the same time to arrange the sheets in compact form, we seal the adjoining edges of the two sheets by an adhesive sub-- stance 2, which, while forming an effective seal to prevent the fiow of the inclosed sticky material, is not sufficiently adhesive to prevent the separation of the sheets, when desired, without tearing.

Instead of the adhesive substance, we may paste a strip of paper or other thin material around the edge, which will answer the same purpose, the object being to connect 'the sheets so as to hold them together and prevent the flow of the inclosed material.

Instead of arranging the sheets in pairs, we may take a single sheet, as shown in Fig. 3, fold it in the center, with the two leaves having their sticky faces in contact, fold back the margins in the same manner as in Fig. 1, and apply the sealing substance to the adjoining edges to prevent the flow of the material and to hold the sheets together.

Instead of forming the sheets in pairs with this sealing margin or edge, we may, as shown in Fig. 4, provide a tablet or package composed of a series of pairs arranged as shown in Fig. 1, with the sealing substance applied to the edges of the series, so that from the package or tablet a pair of sheets may be taken for sale or use, as desired, and the pair thus detached is also provided with sealed margins, and the sheets constituting the pair may be separated by the purchaser, when desired.

In Fig. 5 we have shown the folded sheets of Fig. 3 arranged in tablet form, in substantially the manner shown in Fig. 4, the only difference being that instead of placing separate sheets face to face one sheet is folded in the center and a series of these sheets held together in tablet form by the adhesive substance applied to the margin of the Whole.

It will be understood that when the sheets are to be used they are separated by grasping the unsmeared margins and exerting force sufficient to overcome the resistance of the adhesive substance connecting the margins, after which the folded unsmeared margins are straightened out and the sheets handled without smearing the hands of the user by means of these margins.

e are aware that it is not new to fold a sheet of fly-paper upon itself with the sticky faces in contact, an (1 then turn the unsm cared margins over upon one side to prevent the flow of the sticky material, and we wish to distinguish between this construction and our invention.

\Ve claim 1. A pair of sheets or leaves of sticky flypaper having one face covered with a sticky substance and uncoated margins, each of said margins being turned over on the backs of their respective sheets or leaves, the sticky faces being in contact with each other and the edges of said sheets orleavesbeing scaled 

